Terms of service

Paper Grinder is a personal examiner. You give it your subjects, target grades, and exam dates; it builds practice sessions, marks your answers against real mark schemes, and tracks your progress. We do not generate questions: we use real past-paper questions from Cambridge (CAIE).

• You must be at least 16 years old to create an account without parental consent.
• You're responsible for keeping your login credentials safe.
• You agree the information you provide (subjects, target grades) is accurate.
• One account per person. Don't share accounts.

• Free tier includes five graded reps and ten coach messages per day. Premium removes both daily limits and opens the full progress report, including provisional grade forecasts. Marking against the official scheme, photo marking, loss diagnosis, and the coach are included on both tiers.
• Premium is billed monthly or annually via Stripe. Prices shown on the pricing page are final; applicable taxes are added at checkout.
• Subscriptions renew automatically at the end of each billing period. Cancel anytime from the Stripe billing portal linked in your account; cancellation takes effect at the end of the current period and you keep Premium until then.
• UK/EU consumers have a 14-day cooling-off period from the first purchase. If you cancel within 14 days and have not used Premium features, we refund the charge in full. If you have used Premium features, we refund a pro-rata amount. Email hello@papergrinder.com to request a refund.
• Failed payments suspend Premium access after a short grace period.

Don't use Paper Grinder to:

• Submit answers to an assessment you're sitting live (cheat).
• Scrape, copy, or redistribute our marking prompts, mark-scheme annotations, or coaching output.
• Abuse the service to harass, impersonate, or harm other users.
• Reverse-engineer the marking or planning algorithms.
• Upload content that isn't yours or that infringes someone else's rights.

Breaking these rules can lead to us suspending or terminating your account without refund.

Marking is produced by a large language model (Google's Gemini). We tune prompts, inject the official mark scheme where one is available, and enforce a structured output format, but the output is not infallible. Use it as a practice signal, not as an official mark. We are not responsible for differences between our marking and the marks you receive from an exam board.

Question and mark-scheme images come from Cambridge (CAIE) and remain Cambridge's property. We're entitled to display them for study purposes. Our coaching output (observations, plans, chat responses, prompt tuning) is ours; you may use it for your own study but not redistribute it.

Your submissions (attempts, answers, photos) remain yours. You grant us the licence we need to run the service: store them, mark them, and show them back to you.

You can delete your account and download all your data any time from Settings (Settings → Delete your account; Settings → Download my data). Deletion cancels any active Premium subscription and removes your study data. You can also email hello@papergrinder.com. See the privacy policy for retention details.

The service is provided "as is." We don't guarantee uninterrupted availability, accurate marking in every case, or specific exam outcomes. To the fullest extent permitted by law, we exclude all warranties, conditions, and other terms that would otherwise be implied, and we limit our liability to what is lawfully excludable. Nothing in these terms restricts liability that cannot be lawfully restricted, including death or personal injury caused by our negligence, fraud, or any rights you have under the UK Consumer Rights Act 2015 or equivalent consumer-protection legislation in your country of residence.

We may update these terms to reflect product changes or legal requirements. Material changes are announced by email at least 14 days before they take effect. Continued use after that counts as acceptance.

These terms are governed by the laws of England and Wales. Claims arising from these terms will be heard in the courts of England and Wales, except that EU and EEA consumers retain the right to bring proceedings in the courts of their country of residence where mandatory local consumer-protection law so requires, and mandatory consumer-protection rules of your country of residence continue to apply regardless of this clause.

hello@papergrinder.com